Automatic grain-weighing scales



(No Model.) 2 Sheets-Sheet 1.

J. H. GUNDER & W. H. PIERCE. AUTOMATIC GRAIN WBIGHING SCALES.

No. 436,854. Patented Sept. 28, 1890.

[NYE/V2092 s W] ESQSIE'SI J6. 9W d (No Model.) 2 Sheets-Sheet 2.

' J. H. GUNDER & W. H. PIERCE.

AUTOMATIG GRAIN WEIGHING SCALES.

No. 436,854. Patented Sep1:.23, 1890.

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alllorney UNITED STATES PATENT OFFICE.

JAMES H. GUNDER AND "WILLIAM HENRY PIERCE, F TOLONO, ILLINOIS.

AUTOMATIC GRAIN-WEIGHING SCALES.

SPECIFICATION forming part of Letters Patent No. 436,854, dated September 23, 1890. Application filed April 12, 1890- Serial No. 347,630. (No model.)

To all whom it may concern.-

Be itknown that we, JAMEs H. GUNDER and WILLIAM HENRY PIERCE, citizens of the United States, residents of Tolono, in the county of Ohampaign and State of Illinois, have invented certain new and useful Improvements in Automatic Weighing-Scales; and we do declare the following to be afull, clear, and exact description of the invention, such as will enable others skilled in the art to Y which it appertains to make and use the same,

reference being had to the accompanying drawings, and to letters of reference marked thereon,which form a part of this specification.

Figure 1 of the drawings is a top plan view of our invention. Fig. 2 is a vertical section on line so a: of Fig. 1. Fig. 3 is a front eleva tion, and Fig. 4 is a detail View, of the same.

This invention relates to certain improvements in weighing-scales, more especially for grain; and it consists in the construction and novel combination of the parts, as will appear from the following description and accompanying drawings.

In the drawings, A A are two hoppers or receptacles which are suspended or hung by fixed bails a a. The bails have each an upwardlyextending branch or arm a, which is provided with an eye or loop a engaging a knifeedged pivot or fulcrum a upon one side of the inner end each of two levers B. Each lever B has an additional knife-edged pivot 11 close to the pivot a which engages the eye or loop of an eyebolt c, secured to a beam of the frame 0, suitably erected upon a platform 0, over an opening in which are suspended or arranged the hoppers or receptacles A A. The opposite or outer ends of the levers B are connected by links I) to additional levers D, fulcrumed in the side pieces or uprights of the frame C, their outer ends projecting through and each provided outside of said uprights with a counterpoise (Z. The inner or opposite ends of the levers D are each supplied with a movable weight d.

The receptacle or hoppersAAare provided in their bottoms with trap-doors A A, connected adj ustably by rods 6 e to the ends of a lever E, secured to a tilting chute F, cen trally pivoted in a double stationary chute or spout G, which, together with the feed-hop- I per II, is bolted or secured to a bracket or frame f, secured at one end to the frame 0 and at its other end to platform 0'. The levers D have depending from them trip-rods g, guided in cross-bars f, secured to the upper edges of the hoppers A and bent or offset so as to engage angle or trip levers I, pivoted upon said cross-barsf and connected by suitable bars I to the trap-doors A A of the said hoppers or receptacles. The rod I always being subjected to a pull exerted against the fulcrum of the trip I, a sort of toggle-joint will thereby be formed, thus looking the parts until the horizontal arm of said trip is actuated, as presently seen. It will be seen that as the grain or other substance to be weighed is passing from the feed-hopper through the tilting chute into the double chute and out of one outlet thereof it will enter the corresponding receptacle or hopper below, its trap-door being closed. Just as the requisite quantity of grain has been received in this hopper or receptacle its weight will overbalance the weight cl, depressing its end of its scale-beam and accordingly elevating the free end of said beam. The trip-lever of said receptacle A will 110W be engaged by its respective trip-rod g, and thus open the trap-door of said receptacle A, permitting the discharge of the contents of the latter. At the same time the tilting chute will, by the action of the trap-door through the rod connecting it with said chute, be so shifted or actuated as to cut oif communica tion with the discharging-receptacle and effect communication with the empty or oppo site receptacle, and thus direct the flow of the grain into and fill the latter, which will in similar manner as the aforesaid receptacle, after being filled, dispose of its contents.

Having described this invention, what we claim, and desire to secure by Letters Patent, 1s-

1. The weighing scales having the weighin g receptacles or hoppers provided with trapdoors in their bottoms, in combination with the weighted levers and their adj unctive mechanism, the trip or angle levers connected to said trap-doors, and the trip-rods connected to said weighted levers and acting upon said angle or trip levers, substantially as set forth.

2. The weighingscales having the weigl1- in g hoppers or receptacles provided with trapconnection with said trap-doors, the weighted levers, having link-and-lever connection with the bails of said receptacles, trip-rods ,connecting with said weighted levers and acting upon said trip or angle levers, and the double chute arranged to alternately discharge into said receptacles, substantially as specified.

In testimony whereof we alfix our signatures in presence of two witnesses.

- JAMES H. GUNDER.

WILLIAM HENRY PIERCE. Witnesses:

EDWARD B. ROGERS, THOMAS M. SALISBURY. 

